# Precalculus Examples

,

Since does not contain the variable to solve for, move it to the right side of the equation by subtracting from both sides.

Replace all occurrences of with the solution found by solving the last equation for . In this case, the value substituted is .

Subtract from to get .

Move all terms not containing to the right side of the equation.

Since does not contain the variable to solve for, move it to the right side of the equation by subtracting from both sides.

Add and to get .

Divide each term by and simplify.

Divide each term in by .

Simplify the left side of the equation by cancelling the common factors.

Reduce the expression by cancelling the common factors.

Factor out of .

Cancel the common factor.

Rewrite the expression.

Move the negative one from the denominator of .

Simplify the expression.

Multiply by to get .

Rewrite as .

Divide by to get .

Replace all occurrences of with the solution found by solving the last equation for . In this case, the value substituted is .

Multiply by to get .

Add and to get .

The solution to the system of equations can be represented as a point.